seek professional help. there are a lot of centres catering to help people with hairloss and receding hair line. if your city don't have it, i would recommend you to cut your head bald. it's very cool and sexy for a guy with bald head.
This will be very costly if you want to stop it. Doctors can perscribe some drugs that make your hairloss stop and thicken up the follicles you have. The cheapest way is to just shave your head. It is in style and well I would rather buy a razor than pay more than $60 a month and have sexual sideffects.